Topology-inclusive aerodynamic shape optimisation using a cellular automata parameterisation

• DOI: 10.1007/s00158-024-03916-6
• Publication Date: 2025-01-30T10:58:25Z
• Authors: M. J. Wood; T. C. S. Rendall; C. B. Allen; L. J. Kedward; N. J. Taylor; J. Fincham; N. E. Leppard
• Keywords: Control volume

Abstract A novel geometry parameterisation method constructed from a volume-of-solid driven cellular automata is presented. The capable of describing complex arbitrary topology using set parameters applied to control mesh. This done by approximating the smooth minimum surface area subject localised constraints on contained volume defined both mesh and parameters. Localised refinement possible through splitting cells provide additional degrees freedom where necessary. shown reconstruct over 98% library aerofoil geometries within standard wind tunnel-equivalent geometric tolerance, recover known analytical optima in supersonic flow. Using gradient-free optimisation methods, then construct aerodynamic consisting multiple objects package existing geometries. Finally, used an optimal multi-body with less than half drag equivalent single body.